以9-蒽醛为荧光基团的吡唑啉衍生物荧光探针对Fe3+和Cu2+的检测

以9-蒽醛为荧光基团,吗啉环和吡唑环为识别基团,合成了一种新型荧光探针1,5-二苯基-3-(10-(吗啉甲基)蒽-2-基)吡唑啉(PMAP),利用1H NMR、13C NMR和单晶衍射表征其结构,通过荧光发射光谱和紫外可见吸收光谱研究其离子识别性能。结果表明,探针PMAP对Fe³⁺、Cu²⁺具有良好的识别效果,荧光量子产率分别从0.14降到0.05和0.04,溶液颜色从淡黄色变为蓝色。PMAP与Fe³⁺/Cu²⁺以1∶1的化学计量比形成配合物,检测限约为1μmol·L^-1。同时,干扰实验表明PMAP具有良好的抗干扰性能。在实际样品中的应用表明,PMAP传感器能有效地检测实际水样中的Cu²⁺和Fe³⁺。另外,根据Fe³⁺、Cu²⁺和H+不同组合时PMAP的量子产率构建了分子水平上的三输入NOR逻辑门电路。

Detection of Fe3+ and Cu2+ by Fluorescence Probe of Pyrazoline Derivatives with 9-Anthralaldehyde as Fluorescent Group

A novel fluorescent sensor 1,5-diphenyl-3-(10-(morpholinemethyl)anthracene-2-yl)pyrazoline(PMAP)was synthesized successfully,and characterized by 1H NMR and 13C NMR spectracopy and X-ray single crystaldiffraction.Selective recognition of PMAP for cations was investigated by fluorescence emission spectrum and ultra-violet-visible absorption spectrum.The results showed that the PMAP exhibited high selective and sensitive to Fe³⁺(for a ca.45 nm red shift)and Cu²⁺,showing color change from pale yellow to blue and the fluorescence quantumyield decreased from 0.14 to 0.05 and 0.04,respectively.The sensor demonstrated a 1∶1 binding stoichiometry to Fe³⁺/Cu²⁺as well as a low detection limit of ca.1μmol·L^-1,and interference experiments revealed that this sensorhad an excellent anti-interference ability.Furthermore,the sensor can be effectively applied for the detection of Cu²⁺and Fe³⁺in practical water samples.In addition,a three-input NOR logic gate circuit was constructed at the molecu-lar level by the quantum yield of PMAP for Fe³⁺,Cu²⁺and H+in different combinations.CCDC:2051694.